The oblique S parameter in Higgsless electroweak models

Rosell, Ignasi
October 2012
AIP Conference Proceedings;Oct2012, Vol. 1492 Issue 1, p45
Academic Journal
We present a one-loop calculation of the oblique S parameter within Higgsless models of electroweak symmetry breaking. We have used a general effective Lagrangian with at most two derivatives, implementing the chiral symmetry breaking SU(2)LxSU(2)R→SU(2)L+R with Goldstones, gauge bosons and one multiplet of vector and axial-vector resonances. The estimation is based on the short-distance constraints and the dispersive approach proposed by Peskin and Takeuchi.


Related Articles

  • Testing Higgs self-couplings at high-energy linear colliders. Mu¨hlleitner, M. M. // AIP Conference Proceedings;2001, Vol. 578 Issue 1, p253 

    In order to verify the Higgs mechanism experimentally, the Higgs self-couplings have to be probed. These couplings allow the reconstruction of the characteristic Higgs potential responsible for the electroweak symmetry breaking. The couplings are accessible in a variety of multiple Higgs...

  • Five-dimensional geometric model of gravitational and electroweak interactions. Krechet, V. // Russian Physics Journal;Jul2013, Vol. 56 Issue 2, p133 

    A geometric model is presented which unifies the three fundamental physical interactions: gravitational, electromagnetic, and weak. All of the indicated fields are unified on the basis of a single geometrical scheme - the geometry of a 5-dimensional metric-affine space-time with curvature,...

  • Electroweak symmetry breaking beyond the Standard Model. BHATTACHARYYA, GAUTAM // Pramana: Journal of Physics;Oct2012, Vol. 79 Issue 4, p675 

    In this paper, two key issues related to electroweak symmetry breaking are addressed. First, how fine-tuned different models are that trigger this phenomenon? Second, even if a light Higgs boson exists, does it have to be necessarily elementary? After a brief introduction, the fine-tuning...

  • Some Quantum Symmetries and Their Breaking II. Selesnick, S. // International Journal of Theoretical Physics;Apr2013, Vol. 52 Issue 4, p1088 

    We consider symmetry breaking in the context of vector bundle theory, which arises quite naturally not only when attempting to 'gauge' symmetry groups, but also as a means of localizing those global symmetry breaking effects known as spontaneous. We review such spontaneous symmetry breaking...

  • Classification of finite reparametrization symmetry groups in the three-Higgs-doublet model. Ivanov, Igor; Vdovin, E. // European Physical Journal C -- Particles & Fields;Feb2013, Vol. 73 Issue 2, p1 

    Symmetries play a crucial role in electroweak symmetry breaking models with non-minimal Higgs content. Within each class of these models, it is desirable to know which symmetry groups can be implemented via the scalar sector. In N-Higgs-doublet models, this classification problem was solved only...

  • Higgs Effective Lagrangian. Ghezzi, Margherita // EPJ Web of Conferences;2013, Issue 60, p1 

    We present a short overview of the main aspects of the Higgs Effective Lagrangian. In particular we highlight a strategy to determine whether the electroweak symmetry breaking sector is controlled by a strong or a weak dynamics. We give an estimate of the effects of the effective operators on...

  • ELECTROWEAK SYMMETRY BREAKING AND THE HIGGS BOSON. Pich, Antonio // Acta Physica Polonica B;Jan2016, Vol. 47 Issue 1, p151 

    The first LHC run has confirmed the Standard Model as the correct theory at the electroweak scale, and the existence of a Higgs-like particle associated with the spontaneous breaking of the electroweak gauge symmetry. This article overviews the present knowledge on the Higgs boson and discuss...

  • Unified prescription for the generation of electroweak and gravitational gauge field Lagrangian on a principal fiber bundle. Verwimp, Theo // Journal of Mathematical Physics;Dec90, Vol. 31 Issue 12, p3047 

    It is essentially known that useful gauge field Lagrangians arise as Weil polynomials of the curvature of the gauge connection. The deeper implications and details of this fact are worked out in two widely differing cases. The Glashow–Weinberg–Salam gauge field Lagrangian for...

  • Dynamics Behind the Quark Mass Hierarchy and Electroweak Symmetry breaking. Miransky, Vladimir A. // AIP Conference Proceedings;5/24/2011, Vol. 1354 Issue 1, p84 

    I review the dynamics in a new class of models describing the quark mass hierarchy, suggested recently by Michio Hashimoto and the author. In this class, the dynamics primarily responsible for electroweak symmetry breaking (EWSB) leads to the mass spectrum of quarks with no (or weak) isospin...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics